Car-brake



(No Model.) 2 Sheetse-Sheet 1. W. P. MILLS T- ISBISTER. GAR BRAKE.

No. 252,124. Patented Jan. 10,1882.

illllllllll liillllllll} 5/7., WITNESSES ,INVENTORS 1 ATTORNEYS V I 2 Sheets-Sheet 2. W. F. MILLS 82 T. ISBISTER.

GAR BRAKE.

Patented Jan. 10,1882.

(No Mqdei.)

( ZWM INVENTORS,

WITNESSES UNITED STATES PATENT OFFICE.

WILLARD F. MILLS AND THOMAS ISBISTER, OF CLEVELAND, OHIO.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 252,124, dated January 10, 1882.

' I Application filed July 5,1881. (No model.)

To all whom it may concern:

Be it known that we, WILLARD F. MILLS and THOMAS IsBISTER, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain newand useful Improvements in Car Brakes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

Our invention relates to car-brakes; and it consists in the peculiar construction of the same, as ill be hereinafter fully set forthand claimed.

1n the drawings, Figure 1 is a plan view of a street-car truck withour improved brake attached. Fig. 2 is an end view of the same. Figs. 3, 4, 5, and dare detached'views of the friction-clutches, showing the manner of constructing and operating the same.

A is a car-frame, which is provided with axles B G and Wheels D E.

F G are friction-clutches, which are placed on the axles B O, as shown in Fig. 1; or they may be made part of the wheels D E, as shown in Fig. 6. The construction of these clutches is shown more clearly in Figs. 4, 5, and 6.

M M are outer bands or casings, which may be secured to the axles B O, as shown in Fig. l; or they may be made part of the wheels I) and E, as shown in Fig. 6.

H is a hearing which fits over the axle B and allows said axle to revolve freely within it. 'Ihisbearing H is prevented from turning by means of a cross-bar, K, and brace L, as shown in Figs. 3 and 5.

I J are frames which fit over and slide up and down on the bearing H. The outer ends of these frames 1 and J are made convex, to correspond and engage with the inner surface of the casing M, and are operated by means of a disk, N, which is provided with inclines c d, which engage with inclines eand f on the frames Iand J, and thus serve, whensaid disk N is revolved by means of an arm, 0, to force the frame I upward and the frame J downward, causing the convex surfaces of said frames to press against the inner surface of the casingM and form frictional contact therewith, and prevent said casing and the axle or wheel to which it may be attached from revolving. When the disk N is revolved in the opposite direction the rubber springs P and R act to draw the frames I and J together and allow the casing M to revolve freely around said frames I and'J.

The arms 0 may be operated in any suitable manner, one manner being shown in Fig.

'1 of the drawings.

What we claim is-- 1. In a car-brake, the combination, with the casing M, of the frames I and J and disk N, substantially as set forth.

2. In a car-brake, the combination, \viththe casing M, of the frames I and J, disk N, and bearing H, substantially as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLARD F. MILLS.

I THOMAS ISBIS'IER.

Witnesses:

THOMAS I. GEEK, GEO. B. WHITEHORNE. 

